Book 77 CNG Flashcards
Compressed Natural Gas (CNG) is designed as an alternate ______ and the MTA has committed its entire fleet to this type of ______ usage
Fuel
Fuel
General Guidelines - Ensure that all sources of ignition are eliminated-NO TRAFFIC ________
FLARES
CNG:
General Guidelines - Establish a safe zone at ___ feet minimum, more expansive as incident dictates
50
NOTE: Though CNG is considered to be nontoxic, large volumes of the gas in a confined space can displace __________ and cause asphyxiation
Oxygen
Unschedule Release of Gas (Gas Leak) - Determine if gas leak present by ______ detection, sharp ________ sound, _______ on fuel components or use a hand-held gas detection device
Odor
Hissing
Icing
If no leak is present, initiate public safety duties and request _____ equipment maintenance personnel to determine if bus is to continue in-service operations or is in need of towing
MTA
Fuel Cylinders - mounted under _____ or above ________
Bus
Engine
Fuel Cylinder Pressure Relief Valves - will vent to atmosphere if pressure or temperature _______ design
Exceeds
Stopping Engine - Switch Box: located in the _________ Compartment and is visible immediately upon opening engine door
Engine
Stopping Engine - Switch Box: position the “Rear Engine Ru” toggle to the ________ position or “____”
Center
Off
Stopping Engine - Switch Box: model #700-7514=, push and hold ________ loaded “Stop Eng Run” toggle until engine stops
Spring
Manual Fuel Shut Off Valve - turn ______ handle ____ turn to stop flow to engine
BLACK
1/4
Manual Fuel Shut Off Valve - model 5000 - 5522 & 7000 - 7514 use a ____ handle
RED
Battery Disconnect Switch - bus may have ___ volt, ___ volt or both type electrical systems
12
24
Manual Fire Suppression Actuator Valve - pull the after ring from manual actuator and press the ____ fire button down to discharge
RED
